Toggle mechanism for jaw-type crusher



June 19, 1956 w. TRAYLOR, JR 2,751,159

TOGGLE MECHANISM OR JAW-TYPE CRUSHER 3 Sheets-Sheet 1 Filed Aug. 3, 1953 June 19, 1956 s. w. TRAYLOR, JR

TOGGLE MECHANISM FOR JAW-TYPE CRUSHER 3 Sheets-Sheet 2 Filed Aug. 3, 1953 n 19, 1956 s. w. TRAYLOR, JR

TOGGLE MECHANISM FOR JAW-TYPE CRUSHER 3 Sheets-Sheet 3 Filed Aug. 3, 1953 III/ 'IIIIIIIIIIII J3 III/ W vvv ma w rill/111i! 2,751,159 TOGGLE WCHANISM FGR JAW-TYPE CRUSHER Samuel W. Traylor, in, Allentown, Pa. Application August 3, 1953, Serial No. 371,992 9 Claims. (Cl. 241269) The present invention relates to jaw-type crushers and more particularly to a novel toggle mechanism for crushers of this type.

In jaw-type crushers a swing jaw is mounted for swinging movement to and from a fixed jaw. There are two major constructions for eifecting the swinging movement of the jaw. In the first construction, the so-called Blake jaw crusher, the swing jaw is pivotally mounted on a fixed shaft, and the swinging movement is eifected by a toggle mechanism having two flat toggle plates in endwise compression between a vertically reciprocating pitman, and the swing jaw and the frame respectively. in the other construction, the so-called eccentric-in-jaw crusher, the swing jaw depends from a driven eccentric shaft, and horizontal movement is imparted to the lower end of the swing jaw by a fiat toggle plate held in endwise compression between the frame and the swing jaw.

In each construction, the conventional toggle mechanism is subject to substantial compressive forces. in addisarily must be made excessively strong and heavy to avoid the adverse effects of uneven loading.

With the foregoing in mind, a primary object of the present invention is to provide a novel toggle mechanism for a jaw-type crusher which minimizes the torsional or twisting stresses in the mechanism.

A further object of the present invention is to provide a toggle mechanism which is self-adjusting to balance out uneven loads on the jaw, and enable the parts to be made substantially smaller and lighter than in conventional apparatus.

These and other objects of the invention and the various features and details of the construction and operation to the accompanying drawings in which:

Fig. l is a plan view of a Blake-type jaw crusher, made in accordance with the present invention;

Fig. 2 is a side elevational view partially in section of the crusher illustrated in Fig. l

Fig. 3 is an enlarged sectional view taken on the line 33 of Pig. 1;

Fig. 4 is a fragmentary horizontal sectional view showing the arrangement of the novel toggle mechanism made in accordance with the present invention;

Fig. 5 is a vertical sectional view of an eccentric-in-jawtype crusher made in accordance with the present invention; and,

Z,75l,l9 Patented June 19, 1956 Fig. 6 is a horizontal sectional view taken on the line 66 of Fig. 5.

The present invention provides a novel toggle mecham operate to balance out the effects of an uneven load on the swing jaw of the crusher.

Referring now to the drawings, Figs. 1 to 4 thereof illustrate the invention as applied to a Blake type of In accordance with the present invention, the toggle mechanism 14 comprises against the lower surface of the pitman 15 by a springloaded bolt 21. A plurality of struts or toggle members, in the present instance four, 22, 23, 24, and 25 are engaged against the distributor and held against lateral displacement therein by replaceable Wear socket members 26.

rear toggle members 24' and 25 engage in wear members 34 in a toggle block 28 which is held against displacement of the frame by a pair of bolts 29 and a toggle block to make minor adjustments in the size of the cavity between the swing jaw 12 and the fixed jaw plate 11. The wedge 3% is verticallyadjustable by means of a bolt 32 to determine the fore and aft adjustment of the toggle block 28. A spring-loaded tension rod 33 biases the swing jaw rearwardiy to maintain engagement of the toggle members .22 to 25 inclusive in their respective socket members.

in accordance with the invention, the distributor 2G is not rigidly fixed to the pitman 25 but is capable of slight Thus, the distributor is free to automatically align itself to balance out uneven loads on a swing jaw 12.

the forces, there wlll be relatively no twisting action on the jaw 12 so that any tendency of the members 12 and 28 to twist 3 em but may be utilized in eccentric-in-jaw-type crushers such as, for example, illustrated in Figs. 5 and 6. In this type of construction, the toggle plate which is in endwise compression between the frame and the jaw, is replaced by a toggle mechanism somewhat similar to the mechanism described above in connection with Figs. 1 to 4. As seen in Fig. 5, the swing jaw 41 is mounted on a driven eccentric shaft 42 for swinging movement toward and from a fixed jaw 43 fixed on the frame 44 of the apparatus. The toggle mechanism, indicated genorally at 45, is disposed between the lower end of the swing jaw and toggle blocks 46, 46. The toggle blocks are mounted for fore and aft adjustment by means of wedge mmebers 47, 47 which are adjusted laterally by adjusting screws 48, 48. A spring-loaded tension rod 49 is provided to bias the swing jaw 41 rearwardly in the apparatus.

In accordance with the invention, the toggle mecha- :nism 45 comprises a distributor 51 and a plurality of toggle members 52, 53, 54, and 55. Replaceable wear rsocket members 55 are provided in the distributor 51, the swing jaw 41 and the toggle block 46 to receive the toggle members 52 to 55 inclusive. Under the bias of the spring-loaded tension rod 49, the distributor 51 is Forged upwardly against a depending plate 58 rigidly secured to the framework as indicated at 59. The lower surface of the plate 58 and the upper surface of the distributor 51 are smooth for sliding engagement, permitting limited rotational movement of the distributor upon the application of an uneven load against the swing jaw 41. It is apparent that the toggle mechanism 45 functions identically to the toggle mechanism 14 to counterbalance the forces created by an uneven load against the swing jaw 41.

While particular embodiments of the invention have been herein illustrated and described, it is not intended to limit the invention to such disclosures, and changes and modifications may be made therein and thereto within the scope of the following claims.

I claim:

1. In a jaw-type crusher having a frame, a fixed jaw adjacent one end of said frame, and a depending swing jaw mounted on an axis substantially parallel to the fixed jaw for swinging movement toward and away from said fixed jaw, a toggle mechanism disposed between said swing jaw and the frame for effecting swinging movement of the swing jaw comprising a distributor, means limiting movement of said distributor in one vertical direction and affording rotary movement thereof in a substantially horizontal plane, at least two opposed elongated toggle members, each engaged at one end against said swing jaw, and inclined in said one vertical direction longitudinally and laterally of the frame into engagement at the opposite end against the distributor, at least two opposed elongated toggle members, each engaged at one end against the opposite end of the frame and inclined in said one vertical direction longitudinally and laterally of the frame into engagement at the opposite end against the distrubtor, and means biasing said swing jaw away from said fixed jaw to compress said toggle members and bias said distributor in said one vertical direction against said limit means.

2. In a jaw-type crusher having a frame, a fixed jaw adjacent one end of said frame and a depending swing jaw mounted on an axis substantially parallel to said fixed jaw for swinging movement toward and away from said fixed jaw, a toggle mechanism disposed between said swing jaw and the opposite end of the frame for effecting swinging movement of the swing jaw comprising a distributor, means limiting movement of said distributor in one vertical direction and affording rotary movement thereof in a substantially horizontal plane, at least two opposed generally cylindrical-toggle members, each engaged atone end against said swing jaw, and inclined in said one vertical direction longitudinally and laterally of the frame into engagement at the opposite end against the distributor, at least two opposed generally cylindrical toggle members, each engaged at one end against said opposite end of the frame and inclined in said one vertical direction longitudinallly and laterally into engagement at the opposite end against the distributor, and means biasing said swing jaw away from the fixed jaw to compress said toggle members and bias said distributor in said one vertical direction against said limit means.

3. In a jaw-type crusher having a frame, a fixed jaw adjacent the forward end of said frame, and a depending swing jaw mounted on an axis substantially parallel to said fixed jaw for swinging movement toward and away from said fixed jaw, a toggle mechanism disposed between said swing jaw and the rear end portion of the frame for effecting swinging movement of the swing jaw comprising a distributor, means limiting movement of said distributor in one vertical direction and affording rotary movement thereof in a substantially horizontal plane, at least two opposed elongated forward toggle members each engaged at one end against the swing jaw and inclined in said one vertical direction rearwardly and laterally into engagement at the opposite end against the distributor, at least two elongated rearward toggle members each engaged at one end against said rear end portion of the frame and inclined in said one vertical direction forwardly and laterally into engagement at the opposite end against the distributor, means defining sockets in said swing jaw, distributor, and rear frame portion to receive the toggle members and support the same against lateral movement, and means biasing said swing jaw rearwardly away from said fixed jaw to compress the toggle members and bias said distributor in said one vertical direction against said limit means.

4. In a jaw-type crusher having a frame, a fixed jaw adjacent the forward end of said frame, and 2. depending swing jaw mounted on an axis substantially parallel to said fixed jaw for swinging movement toward and away from said fixed jaw, a toggle mechanism disposed between said swing jaw and the rear end portion of the frame for eifectiing swinging movement of the swing jaw comprising a distributor, means limiting movement of said distributor in one vertical direction and affording rotary movement thereof in a substantially horizontal plane, at least two opposed elongated forward toggle members each engaged at one end against the swing jaw and inclined in said one vertical direction reatwardly and laterally into engagement at the opposite end against the distributor, at least two elongated rearward toggle members each engaged at one end against said rear end portion of the frame and inclined in said one vertical direction forwardly and laterally into engagement at the opposite end against the distributor, means defining sockets in said swing jaw, distributor, and rear frame portion to receive the toggle members and support the same against lateral movement, wear members positioned in said sockets between each toggle and its sockets, and means biasing said swing jaw rearwardly away from said fixed jaw to compress the toggle members and bias said distributor in said one vertical direction against said limit means. r

5. In a jaw-type crusher having a frame, a fixed jaw adjacent the forward end of said frame, and a depending swing jaw mounted on an axis substantially parallel to said fixed jaw for swinging movement toward and away from said fixed jaw, a toggle mechanism disposed between said swing jaw and the rear end portion of the frame for effecting swinging movement of theswing jaw comprising a distributor, meanslimiting movement of said distributor in one vertical direction and affording rotary movement thereof in a' substantially horizontal plane about its center, at least two opposed elongated forward toggle members each engaged at one end against the swing jaw and inclined in said one vertical direction rearwardly and laterally into engagement at the opposite end posed elongated toggle members, each engaged at one end toggle members each engaged at one end against said rear against said swing jaw, and inclined in said one vertical members and bias said distributor in said one vertical direction against said limit means. jaw away from said fixed jaw to compress said toggle 6. In a jaw-type crusher having a frame, a fixed jaw rection against said pitman.

8. A crusher according to claim 7 wherein said pitman said fixed jaw for swinging movement toward and away is formed with a spherlcal socket, and said distributor is from said fixed jaw, a toggle mechanism disposed beformed withaspherical dome to be received in said spherisaid pitman and said distributor.

9. In an eccentric-in-jaw type crusher, having a frame, a fixed jaw adjacent one end of said frame, and a dependthereofin a substantially honzontal plane about its center, ing jaw mounted on an eccentric driven shaft substantially parallel to the fixed jaw for swinging movement tothe swing jaw and inclined upwardly, rearwardly and laterally into engagement at the opposite end against the distributor, at least two elongated generally cylindrical swing jaw upon rotation of said eccentric shaft comprisswing jaw, distributor, and rear frame portion to retoggle members, each engaged at one end against said the center of said distributor and means biasing said swing end against the opposite end of the frame and inclined in 7. In a Blake-type jaw crusher having a frame, a fixed jaw adjacent one end of said frame, a depending swing 40 bias said distributor in said one vertical direction against References Cited in the file of this patent swinging movement of the swing jaw comprising a dis- UNITED STATES PATENTS tributor, a vertically reciprocating pitman resiliently 947,669 Mitchell Jan. 25, 1910 mounting said distributor, limiting movement thereof in 1,866,625 Daman July 12, 1932 one substantially vertlcal direction and affording rotary 2,084,188 Buchanan June 15, 1937 movement thereof in a horizontal plane, at least two op- 2,532,678 Shelton Dec. 5, 1950 

